Paint and enamel mill



m E951 J. CUFFLHN 2539,79

PAINT AND ENAMEL MILL Filed June 28, 1948 2 Sheets-Sheet l 65 63 [INVENTHIHH ATTORN E Y 1951 J. CUFFLIN 2,539,729

PAINT AND ENAMEL MILL Filed June 28, 1 948 2 Sheets-Sheet 2 as HNVIENTIEUR a5 /.lc

ATTORNEY Patented Jan. 30, 1951 UNITED STATES PATENT OFFICE 2 Claims. (01. 2414;?)

The invention relates to improvements in a paint and enamel mill, as described in the present specification and illustrated in the accompanying drawings that form a part of the same.

- The invention consists essentially of the novel features of construction as pointed out broadly and specifically in the claims for novelty following nish a dispersing device which will break-up finely ground particles in a paste thus thoroughly mix: ing the same; to assure the proper mixing of ingredients in paste form such as paints, chocolates and the like to make a paint and enamel mill having a roll and a roll contacting flexible belt between which the combined mix of pigments and vehicles pass and by which the group of particles is broken up and the particles themselves reduced to extreme fineness; to contrive a small dispensing device which will thoroughly break up the pigment in a vehicle in the same time or less than that of large conventional devices; to eliminate the necessity of precision like adjustment in a dispersing machine, and to render the same self adjusting; to construct a dispersing device having few and simple parts and inexpensive to manufacture; and generally to provide a dispersing device which will be durable, dependable and efficient in its use.

In the drawings:

Figure 1 is a front view of the dispersing device.

Figure 2 is a plan view of Figure 1.

Figure 3 is an end view of the dispersing dev1ce.

' Figure 4 is a cross sectional view as taken on the line 4-4 in Figure 1.

Figure 5 is a transverse sectional view through the dispersing device as taken on'the line 5-5 in Figure 2.

Figure 6 is an enlarged fragmentary view of Figure 4 showing a substance of paste consistency being passed through the device.

F gure '7 is a cross sectional view as taken on the mes-4 i-nFigure' 1 Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings, the dispersing device consists of a frame as indicated by the nu meral I and which is of a U-shaped formation. The bottom portion I I of this frame ill is adapted to be mounted or rest on any suitable supporting surface, and the end portions [2 and I3 extend vertically upward therefrom. The shaft H extends between the end portions l2 and I3 and is journalled in the same by means of the ball bearings l and I6, respectively.

The shaft has the bores IT and I8 extending into the same from each end thereof a predetermined distance. A single roll I9 is fixedly secured on the shaft 14 by keys 14 and has a central hollow portion within the same. Inlet and outlet holes 2i and 22 extend into the side of the shaft l4 towards the inner end of the bores I! and I8 therein. An inlet pipe 23 extends into the bore I8 in one end of the shaft l4 thus providing a means of feeding a cooling liquid, such as water, into the central hollow portion 20 within the single roll l9. An outlet pipe 24 extends into the bore l1 and accordingly permits an outlet through which the cooling liquid may be drained from within the single roll [9. In this respect, the cooling liquid continuously enters the central hollow portion 20 of the single roll [9 and is drained therefrom thus providing a means of constantly cooling this single roll.

A dispersing belt 25 is adapted to beheld taut over an upper portion of the single roll [Son the outer surface thereof. This dispersing belt 25 may be made of metal, which would be very flexible, or any other suitable non-stretchable material of sufficient strength for the purpose. The dispersing belt holders 26 and 21, are adapted to hold the dispersing belt 25 in proper relation to the single roll l9,'and to engage the same therewith at a constant tension.

The rear dispersing belt bar 28 is supported on a pair of guide pins 29 and 3|], which are located at each end thereof. These guide pins 29 and 30 are mounted in the brackets 3i and 32, respectively, and the latter are fixedly secured to the end portions l2 and l 3 of the frame ID on the inner side thereof. These brackets are secured to the end portions of the frame ii) at right angles to the axis of the single r011 l9 and at the desired angle of approach of the dispersing belt 25 with respect to the periphery of the single roll IS. The compression {springs 33 and 34 are mounted on the guide-pins 29 and 30 between the bracket 3| and 32 and the rear dispersing belt bar 28.

The forward dispersing belt bar 35 is essentially the same as that of the rear dispersing belt bar 28 with minor exceptions. This forward dispersing belt bar 35 holds the forward end of the dispersing belt securely in position on the periphery of the single roll l9, and simultaneously makes it possible for the tension of the same to be suitably adjusted with respect thereto. this respect, the forward dispersing belt bar is adapted to be loosened or tightened with respect to the dispersing belt 25 as may be desired, for various operating conditions in the device and also when it becomes necessary to replace the dispersing belt or change the location of the same. In this instance, the dispersing belt 25 may be adjustably secured in the yoke 36 to one position or another on the supporting members or involute quadrants 3'! and 38. Furthermore these supporting members 3"! and 38 of a formation somewhat similar to involute quadrants have one or more faces and are rigidly mounted upon the inner surface of the end portions l2 and I3 of the frame 55, and permit the yoke 36, which they support, to be mounted by means of the end pins 35 and secured in various positions therein.

The threaded pins 59 and 40 on which the forward dispersing belt bar 35 is supported provide a means of adjusting the latter. The threaded pins 39 and 4t extend outward through the yoke 35 and the end Wheels 4| and 52 are fixedly secured on the end thereof, thus providing a means of adjusting the same which in turn alters the position of the forward dispersing belt bar 35 and accordingly adjusts the tension on the dispersing belt 25.

The hopper 43 which is arcuaiely shaped is suitably secured to the inner surface of the end portions l2 and is of the frame ii! by means of the bracket extensions 5F and 32 at the rear thereof and at the front by the brackets 35 and 32 and located a predetermined distance below the lower portion of the single roll I9. An arcuate space 4& is formed between the hopper 43 and the periphery of the single roll I 9, thus providing a receptacle or container in which the paste may be carried before the dispersion thereof.

The control vane 35 is located within the hopper 43 and is supported on the shoulder screws 45 and 47, which are located near the base of this hopper. The control vane 45 is arcuately shaped and larger than that of the single roll 49, and is adapted to control the amount of pre-mixed undispersed material 48 contained within the hopper 43 which may enter the dispersion area. In this instance, the undispersed material within the hopper is carried. upward by adherenc to the single roll |9 and the scooping action of the control vane 55. In this instance, the control vane '45 restricts the quantity of 'undispersed material that may adhere to the roll thereby permitting a suitable quantity to be carried upward between the roll and the dispersing belt 25. This control vane 45 is pivotally secured at the bottom thereof to each end of the hopper 43 and the upper portion of the same 'is supported by an adjusting mechanism. This adjusting mechanism consists of a vertical rod 5| which is suitably secured to the upper portion of the control vane 45 and extends upward therefrom. The upper portion of the vertical rod 5| extends through a bracket 52 which is fixedly secured to the end portion 13 of the frame it. A collar 53 is fixedly seemed an the verticalrodtl andiadapted to.

accommodate a compression spring 55 between the same and the bracket 52. A hand wheel 54 is adapted to be threaded on the upper portion of the vertical rod 5| so as to raise or lower the latter with respect to the bracket 52. In this instance, the hand wheel 54 may be tightened down on the vertical rod 5| for raising the same and the control vane 45; and simultaneously this hand wheel may be loosened with respect to the vertical rod 5|, thus permitting the compression spring to exert a downward pressure on the same, thereby rolling the upper portion of the control vane outward from the periphery of the single roll.

The scraper chute 56 is suitably located at the front of the device and adapted to take off the dispersed material from the periphery of the roller and directs the same into any suitable container. This scraper chute 55 has a pair of end brackets 57 and 58 fixedly secured thereto, and the latter are adapted to be fixedly secured on the longitudinal rod 59. This longitudinal rod 59 is rotatably supported in the journal blocks 50 and B which are fixedly mounted on the end portions l2 and I3 of the frame H]. A control arm 62 is fixedly secured to the longitudinal rod 59 and extends downward therefrom. An adjusting means is adapted to engage the lower end of the longitudinal rod 59 so as to tilt the scraper chute to any suitable position with respect to the single roll l9. This adjusting means consists of a screw 63 threaded into a stationary block and a hand wheel 65 is fixedly secured on the end of this screw. The inner end of a screw 63 is adapted to bear on the front edge of the control arm 62 and a compression spring E8 bears against the rear edge of the same. In adjusting the scraper edge 5'! of the scraper chute 56 with respect to the periphery of the single roll 59 the screw 63 may be tightened inward or outward to achieve a desired adjustment. In this instance, the tightening inward of the screw 63 tilts the scraper chute 56 so that the scraper edge moves outward from the periphery of the single roll l9, and simultaneously the releasing of this screw 63 permits the compression spring 66 to tilt the scraper chute 5E3 inward, thus bearing the scraper edge 61 against the periphery of this single roll. The scraper chute 56 extends outward from the single roll i9 and is provided with side flanges leading to a common opening to the front thereof.

The end scrapers and G5) are suitably secured to the ends of the hopper 43 and adapted to take off any material extending over the edges of the single roll l9 during the dispersion thereof and returning the same to the hopper.

In the operation thereof the undispersed material 48 is placed in the hopper 53, and as the single roll I9 rotates, this undispersed material adheres to the periphery of the same and in .cooperation with the control vane 45 is suitably scooped up so that a portion of this material is carried upward between the roll and the dispersing belt 25. The material passing between the periphery of the single roll I9 and the dispersing belt 25 is thoroughly dispersed and the finished product is taken oif the roll by the scraper edge 6': on the scraper chute 56. Any remaining material from that portion of the roll is carried downward into the hopper 43 and along with additional material is drawn upward to be passed between the single roll and the dispersion belt a second time and eventually carried therefrom by the scraper chute. Any material extending over the ends ofthe singlerollis up by the end scrapers 68 and 89 and returned to the hopper. The dispersion belt may be suitably adjusted as hereinbefore described so as to create a suitable tension between the same and the periphery of the roll depending on the material to be dispersed and the conditions under which the device may be operating.

The premixed undispersed material to be milled is contained in a suitable receptcle outside the device and suitably fed there-from to the hopper, one end of the mill structure is taken up by the roller drive, the other end being set up for a suitable feeder system, an opening being left in the frame giving access to an opening in the end face of the hopper near the bottom so that the receptacle may be coupled by a pipe to the hopper, and control means could be placed between the hopper and the receptacle,

What I claim is:

1. In a paint and enamel mill, a frame, a shaft journalled in said frame, a single hollow roll fixedly secured on said shaft, said shaft having a, concentric hollow portion extending into each end thereof, and an axial hole leading from each of these concentric hollow portions through the wall of said shaft and forming passageways between the concentric hollow portions and the interior of said single hollow roll, stationary inlet and outlet pipes extending into said shaft and being independent of the movement thereof, said stationary inlet and outlet pipes in co-operation with said shaft providing a means of circulating a cooling liquid through said single hollow roll, a belt engaging the circumference of said single hollow roll, a support member adjustably securing one end of said belt and spring means securing the opposite end of said belt for holding the latter taut over a portion of the circumference of said single hollow roll, a scraper means adapted to engage the circumference of said single hollow roll, an adjusting arm fixedly secured to said scraper means and extending downward therefrom, adjusting means engaging the lower end of said adjusting arm for determining the position of said scraper means with respect to the circumference of said single hollow roll, a hopper adapted to accommodate undispersed material, said single hollow roll extending downward into said hopper and introducing the undispersed material therein, an arcuately shaped control vane located in said hopper and extending inward towards the circumferential surface of said single hollow r011 as it extends upward with respect thereto, and the undispersed material within said hopper being carried upward by adherence to said single hollow roll, and said control vane restricting the quantity of undispersed material that may be carried between the circumferential surface of said single hollow roll and said belt thereby providing a means of substantially dispersing the same, and end scrapers secured to the ends of said hopper and adapted to pick up material extending over the ends of said single hollow roll so that the same may be returned to said hopper.

2. In a paint and enamel mill, a frame comprising a bottom portion and end portions extending upward therefrom at right angles thereto, roller bearings supported in the end portions of said frame, a shaft rotatably mounted in said bearings, a single hollow roll fixedly supported on said shaft, and said shaft having a bore extending inward from each end thereof providing access to the hollow portion of said single hollow roll, an axial hole extending outward from each of the bores in said shaft, stationary outlet and inlet pipes extending into the bores in said shaft and being independent of the movement of the latter, thereby providing a means of introducing a cooling liquid into said single hollow roll and the draining of the same therefrom, a flexible dispersing belt adjustably secured on each end thereof and adapted to engage a top portion of the periphery of said single roll, a hopper accommodating the bottom of said single hollow roll and coinciding in shape with the same so as to provide an arcuate space therebetween, a control vane pivotally mounted in said hopper and adapted to be adjustable with respect to the periphery of said single roll for limiting the quantity of undispersing material therein which will pass between the periphery of said single hollow roll and said flexible dispersing belt, a scraper chute adapted to engage the periphery of said single roll and being adjustable with respect thereto, and said scraper chute being adapted to take off the dispersed material from the periphery of said single roll, and end scrapers adapted to engage said single roll for returning any undispersed material passing over the edges thereof to said hopper.

JACK CUFFLIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 445,071 Olsen Jan. 20, 1891 804,313 Hanford Nov. 14, 1905 938,923 Walker Nov. 2, 1909 982,595 Gunn Jan. 24, 1911 1,062,170 Lauhoff May 20, 1913 1,114,320 Walker "d... Oct. 20, 1914 1,619,004 Sternkopf Mar. 1, 1927 1,671,356 Diederichs May 29, 1928 1,688,297 Parent Oct. 16, 1928 1,713,270 Drysdale May 14, 1929 1,867,184 Smith July 12, 1932 2,143,020 Markley Jan. 10, 1939 2,151,805 Schei Mar. 28, 1939 2,171,465 Weidlich Aug. 29, 1939 FOREIGN PATENTS Number Country Date 34,739 Austria Oct. 10, 1908 391,231 Great Britain Apr. 27, 1933 409,611

Great Britain May 3, 1934 

